Traffic signal



Aug. 23, 1932. D' E 1,873,713

TRAFFIC SIGNAL Filed April 26, 1932 Patented Aug. 23, 1932 UNETED STATESerase nnwannnrnnnnn, or PHILADELPHIA, PENNSYLVANIA TRAFFIC Applicationfiled. April 26,

My invention relates toa new and useful improvement 111 traffic signals,and hasfor one of its ob ects to provide an exceedlngly simpleandeffective device of this description by which a distinctive soundwill be given forth, which sound may be a combination of distinctivesounds, such as two or more whistles of different pitch.

A further object of the invention is to put the sounding of the signalunder ready control of the traflic ofiicer or other authorized personand enable the signal to be sounded with little or no effort on the partof said authorized person.

A still further object of the invention is to provide a power drivenblower in which one or more Whistles may be inserted so thatthe rotatingof the blower will cause said whistles to be sounded.

With these and other ends in view, this invention consists in thedetails of construction and combination of elements hereinafter setforth and then specifically designated by the claim. I

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by numerals to the accompanyingdrawing forming a part of this application, in

which i 1 Fig. 1, is a side elevation of my improved traflic signal.

Fig. 2 is a, plan view of Fig. 1.

" Fig. 3 is an elevation of the signal casing having the face plateremoved and being partly in section so as to show the manner ofattaching the whistles to said casing.

Fig. 4 is a section on the line H of Fig. 3, looking in the direction ofthe arrow, showing the motor in elevation and in proper relation to thesignal casing.

In carrying out my invention as herein embodied, 10 represents thesignal casing having a circular space 11 therein in which the fan blades12- are intended to revolve.

13 represents an electric motor of any suitable design and capacityhaving its power shaft 14 projecting into the space 11 and on thisextended shaft is clamped a split hub 15 1 SIGNAL 19 2- tia rNo-fiwfii'i i byineans ofjthe bolts 16 andbet'weenl the sec-- tions of thissplithubare secured the blades 12 as clearlysho'wn iniFig. 5 V

The signal casing-is'provided withfacover '17 whichis secured in placeby the bolts 18 intended to'be threaded into the holes 19 formed insaidcasing so that bythe' removal 'of this covereasy access may be hadt'othe interior of "the casing for the inspection or repair of the fan. V

20"represents the base upon which the'signal casing and the motor aremounted'and m'a'y'be of suchshape or design as to be readily attached toa trafiic signal post or other desired object.

21 represents nipples which are formed With the casing 10 and thesenipples are of such shape as to readily receive the shanks of thewhistles 22 and when said whistles are in place they are securely heldagainst accidental displacement by suitable screws 23 as will be readilyunderstood, and while these whistles may be of any desired type, I havehere shown that type of whistle in which a small ball 24 is so housed asto rapidly move back and forth over the air outlet 25 to give a trillingsound. The electric wires 26 lead from the motor to any suitable switchor push button so that when the device is used in connect-ion with atraffic sight signal the changing of such signal may be utilized tostart the motor and revolve the blower blades 12, thereby drawing in airthrough the openings 27 and forcing said air out through the whistles togive the proper audible signal.

Or where it is desirable to operate the audible signal independent of asight signal, the operation of the switch or button for sending acurrent through the motor may be .1

By making the whistles removable it enables one whistle to beinterchanged with another, thereby providing for giving a differentcomposite sound to the signal so that the 5 signal may be set for anygiven distinctive sound thus distinguishing one signal from another.

Of course I do not wish to be limited to the exact details ofconstruction as herein shown,

as these may be varied within the limits of the appended claim withoutdeparting from the spirit of my invention.

Having thus fully described my invention,

what I claim as new and useful is An audible power signal consisting ofahollow casing having inlet openings formed in the face thereof, a coverfor closing the casing, a power shaft projecting into the easing; asplit hub adapted to clamp upon the 29 shaft, two fan blades adapted tobe secured between the sections of the hub when the latter is clampedupon the shaft, nipples formed with the casing and having outletstherethrough and whistles rcmovably secured in said whistles.

In testimony whereof, I have hereunto aflixed my signature.

EDWARD LINDNER.

